AffirmHiring

Senior Software Engineer, Backend (Comms Core)

  • Remote, Spain
  • Senior
  • Posted 10 days ago
Apply with Keywordise AI

or apply from Claude / ChatGPT / Muse

In one line

Backend engineering job on a customer communications platform, shaping multi-region infrastructure and vendor integrations at high volume.

About the role

Communications team work, modernising a platform that carries billions of customer messages. Expect quarterly technical goals and shared ownership of ambiguous problems.

At a glance

Pay
Not stated in the posting
Remote scope
Remote, Spain
Seniority
Senior
Skills
Python, Kotlin, AWS, MySQL, DynamoDB, Kubernetes
Posted
19 Oct 2026
Last checked
29 Oct 2026

What you will do

  • Deliver quarterly technical goals for the communications area alongside teammates.
  • Design reliable services for high-volume messaging across multi-region, multi-tenant environments.
  • Work with product, design, analytics, security and engineering partners through the product lifecycle.

What they look for

  • Five or more years in software development or engineering, with solid system design skills.
  • Proficiency in Python, Kotlin or a similar modern language.
  • Experience with highly available distributed systems on AWS, MySQL, DynamoDB and Kubernetes.

How Keywordise applies for you

  1. 1Upload your CVAdd your CV once. It takes about a minute.
  2. 2Tailored to this jobKeywordise writes a CV and a cover letter for this job from your real experience.
  3. 3The form fills itselfName, email, experience and screening questions, field by field.
  4. 4Application sentYou get a receipt and follow it in your dashboard.

Apply with Keywordise AI7-day free trial, no card.

Apply from your AI assistant

Connect Keywordise to your assistant once, then send it the prompt. It applies for you.

ClaudeConnectorChatGPTConnectorMuseby Meta

Claude

  1. In Claude, open Settings, then Connectors, and choose Add custom connector.
  2. Name it Keywordise and paste the connector URL.
  3. Click Connect, log in to Keywordise and approve. Then send the prompt in a new chat.
Connector URL
https://keywordise.com/mcp

Disconnect any time in your Keywordise settings.

ChatGPT

  1. In ChatGPT, open Settings, then Connectors. On plans that need it, turn on developer mode first.
  2. Add a new connector with the connector URL and choose OAuth. Leave the client ID and secret empty.
  3. Log in to Keywordise and approve. Then send the prompt in a new chat.
Connector URL
https://keywordise.com/mcp

Disconnect any time in your Keywordise settings.

Muse

  1. Open Muse (muse.ai or the app) and send it the message below.
  2. If Muse asks how to sign in, answer OAuth. Open the sign-in link it sends, log in to Keywordise and approve.
  3. Send the prompt. Muse asks before it sends anything.
Message for Muse
Add a custom connector called Keywordise. It is a remote MCP server at https://keywordise.com/mcp and uses OAuth. Give me the sign-in link.

Muse is available in the US only for now.

Prompt
Apply to Keywordise job hjtaagyuoj
How to connect

Questions about this job

Is this job fully remote, and from where?

The posting lists it as remote for people in Spain.

What does this job pay?

No pay range is stated in the posting.

What experience is needed?

It is a senior role. The posting asks for: five or more years in software development or engineering, with solid system design skills; proficiency in Python, Kotlin or a similar modern language; experience with highly available distributed systems on AWS, MySQL, DynamoDB and Kubernetes. Skills it names include Python, Kotlin, AWS, MySQL.

How do I apply with Keywordise AI?

Click Apply with Keywordise AI, create an account and upload your CV. Your CV and cover letter are written for this job from what you have really done, then Keywordise applies for you. Trial: 7 days, no card.

More remote IT and software jobs

All remote IT and software jobs
AffirmRemote, Spain
Apply with Keywordise AI